#!/usr/bin/perl -wuse File::Basename;# Copyright 2008, Intel Corporation## This file is part of the Linux kernel## This program file is free software; you can redistribute it and/or modify it# under the terms of the GNU General Public License as published by the# Free Software Foundation; version 2 of the License.## Authors:# Arjan van de Ven <arjan@linux.intel.com>my $vmlinux_name = $ARGV[0];if (!defined($vmlinux_name)) { my $kerver = `uname -r`; chomp($kerver); $vmlinux_name = "/lib/modules/$kerver/build/vmlinux"; print "No vmlinux specified, assuming $vmlinux_name\n";}my $filename = $vmlinux_name;## Step 1: Parse the oops to find the EIP value#my $target = "0";my $function;my $module = "";my $func_offset;my $vmaoffset = 0;while (<STDIN>) { my $line = $_; if ($line =~ /EIP: 0060:\[\<([a-z0-9]+)\>\]/) { $target = $1; } if ($line =~ /EIP is at ([a-zA-Z0-9\_]+)\+(0x[0-9a-f]+)\/0x[a-f0-9]/) { $function = $1; $func_offset = $2; } # check if it's a module if ($line =~ /EIP is at ([a-zA-Z0-9\_]+)\+(0x[0-9a-f]+)\/0x[a-f0-9]+\W\[([a-zA-Z0-9\_\-]+)\]/) { $module = $3; }}my $decodestart = hex($target) - hex($func_offset);my $decodestop = $decodestart + 8192;if ($target eq "0") { print "No oops found!\n"; print "Usage: \n"; print " dmesg | perl scripts/markup_oops.pl vmlinux\n"; exit;}# if it's a module, we need to find the .ko file and calculate a load offsetif ($module ne "") { my $dir = dirname($filename); $dir = $dir . "/"; my $mod = $module . ".ko"; my $modulefile = `find $dir -name $mod | head -1`; chomp($modulefile); $filename = $modulefile; if ($filename eq "") { print "Module .ko file for $module not found. Aborting\n"; exit; } # ok so we found the module, now we need to calculate the vma offset open(FILE, "objdump -dS $filename |") || die "Cannot start objdump"; while (<FILE>) { if ($_ =~ /^([0-9a-f]+) \<$function\>\:/) { my $fu = $1; $vmaoffset = hex($target) - hex($fu) - hex($func_offset); } } close(FILE);}my $counter = 0;my $state = 0;my $center = 0;my @lines;sub InRange { my ($address, $target) = @_; my $ad = "0x".$address; my $ta = "0x".$target; my $delta = hex($ad) - hex($ta); if (($delta > -4096) && ($delta < 4096)) { return 1; } return 0;}# first, parse the input into the lines array, but to keep size down,# we only do this for 4Kb around the sweet spotopen(FILE, "objdump -dS --adjust-vma=$vmaoffset --start-address=$decodestart --stop-address=$decodestop $filename |") || die "Cannot start objdump";while (<FILE>) { my $line = $_; chomp($line); if ($state == 0) { if ($line =~ /^([a-f0-9]+)\:/) { if (InRange($1, $target)) { $state = 1; } } } else { if ($line =~ /^([a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]+)\:/) { my $val = $1; if (!InRange($val, $target)) { last; } if ($val eq $target) { $center = $counter; } } $lines[$counter] = $line; $counter = $counter + 1; }}close(FILE);if ($counter == 0) { print "No matching code found \n"; exit;}if ($center == 0) { print "No matching code found \n"; exit;}my $start;my $finish;my $codelines = 0;my $binarylines = 0;# now we go up and down in the array to find how much we want to print$start = $center;while ($start > 1) { $start = $start - 1; my $line = $lines[$start]; if ($line =~ /^([a-f0-9]+)\:/) { $binarylines = $binarylines + 1; } else { $codelines = $codelines + 1; } if ($codelines > 10) { last; } if ($binarylines > 20) { last; }}$finish = $center;$codelines = 0;$binarylines = 0;while ($finish < $counter) { $finish = $finish + 1; my $line = $lines[$finish]; if ($line =~ /^([a-f0-9]+)\:/) { $binarylines = $binarylines + 1; } else { $codelines = $codelines + 1; } if ($codelines > 10) { last; } if ($binarylines > 20) { last; }}my $i;my $fulltext = "";$i = $start;while ($i < $finish) { if ($i == $center) { $fulltext = $fulltext . "*$lines[$i] <----- faulting instruction\n"; } else { $fulltext = $fulltext . " $lines[$i]\n"; } $i = $i +1;}print $fulltext;
#!/usr/bin/perl -w
use File::Basename;
# Copyright 2008, Intel Corporation
#
# This file is part of the Linux kernel
#
# This program file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; version 2 of the License.
#
# Authors:
# Arjan van de Ven <arjan@linux.intel.com>
my $vmlinux_name = $ARGV[0];
if (!defined($vmlinux_name)) {
my $kerver = `uname -r`;
chomp($kerver);
$vmlinux_name = "/lib/modules/$kerver/build/vmlinux";
print "No vmlinux specified, assuming $vmlinux_name\n";
}
my $filename = $vmlinux_name;
#
# Step 1: Parse the oops to find the EIP value
#
my $target = "0";
my $function;
my $module = "";
my $func_offset;
my $vmaoffset = 0;
while (<STDIN>) {
my $line = $_;
if ($line =~ /EIP: 0060:\[\<([a-z0-9]+)\>\]/) {
$target = $1;
}
if ($line =~ /EIP is at ([a-zA-Z0-9\_]+)\+(0x[0-9a-f]+)\/0x[a-f0-9]/) {
$function = $1;
$func_offset = $2;
}
# check if it's a module
if ($line =~ /EIP is at ([a-zA-Z0-9\_]+)\+(0x[0-9a-f]+)\/0x[a-f0-9]+\W\[([a-zA-Z0-9\_\-]+)\]/) {
$module = $3;
}
}
my $decodestart = hex($target) - hex($func_offset);
my $decodestop = $decodestart + 8192;
if ($target eq "0") {
print "No oops found!\n";
print "Usage: \n";
print " dmesg | perl scripts/markup_oops.pl vmlinux\n";
exit;
}
# if it's a module, we need to find the .ko file and calculate a load offset
if ($module ne "") {
my $dir = dirname($filename);
$dir = $dir . "/";
my $mod = $module . ".ko";
my $modulefile = `find $dir -name $mod | head -1`;
chomp($modulefile);
$filename = $modulefile;
if ($filename eq "") {
print "Module .ko file for $module not found. Aborting\n";
exit;
}
# ok so we found the module, now we need to calculate the vma offset
open(FILE, "objdump -dS $filename |") || die "Cannot start objdump";
while (<FILE>) {
if ($_ =~ /^([0-9a-f]+) \<$function\>\:/) {
my $fu = $1;
$vmaoffset = hex($target) - hex($fu) - hex($func_offset);
}
}
close(FILE);
}
my $counter = 0;
my $state = 0;
my $center = 0;
my @lines;
sub InRange {
my ($address, $target) = @_;
my $ad = "0x".$address;
my $ta = "0x".$target;
my $delta = hex($ad) - hex($ta);
if (($delta > -4096) && ($delta < 4096)) {
return 1;
}
return 0;
}
# first, parse the input into the lines array, but to keep size down,
# we only do this for 4Kb around the sweet spot
open(FILE, "objdump -dS --adjust-vma=$vmaoffset --start-address=$decodestart --stop-address=$decodestop $filename |") || die "Cannot start objdump";
while (<FILE>) {
my $line = $_;
chomp($line);
if ($state == 0) {
if ($line =~ /^([a-f0-9]+)\:/) {
if (InRange($1, $target)) {
$state = 1;
}
}
} else {
if ($line =~ /^([a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]+)\:/) {
my $val = $1;
if (!InRange($val, $target)) {
last;
}
if ($val eq $target) {
$center = $counter;
}
}
$lines[$counter] = $line;
$counter = $counter + 1;
}
}
close(FILE);
if ($counter == 0) {
print "No matching code found \n";
exit;
}
if ($center == 0) {
print "No matching code found \n";
exit;
}
my $start;
my $finish;
my $codelines = 0;
my $binarylines = 0;
# now we go up and down in the array to find how much we want to print
$start = $center;
while ($start > 1) {
$start = $start - 1;
my $line = $lines[$start];
if ($line =~ /^([a-f0-9]+)\:/) {
$binarylines = $binarylines + 1;
} else {
$codelines = $codelines + 1;
}
if ($codelines > 10) {
last;
}
if ($binarylines > 20) {
last;
}
}
$finish = $center;
$codelines = 0;
$binarylines = 0;
while ($finish < $counter) {
$finish = $finish + 1;
my $line = $lines[$finish];
if ($line =~ /^([a-f0-9]+)\:/) {
$binarylines = $binarylines + 1;
} else {
$codelines = $codelines + 1;
}
if ($codelines > 10) {
last;
}
if ($binarylines > 20) {
last;
}
}
my $i;
my $fulltext = "";
$i = $start;
while ($i < $finish) {
if ($i == $center) {
$fulltext = $fulltext . "*$lines[$i] <----- faulting instruction\n";
} else {
$fulltext = $fulltext . " $lines[$i]\n";
}
$i = $i +1;
}
print $fulltext;